White food rubber slab and preparation method thereof

Abstract

The invention relates to a white food rubber slab which is prepared from the following raw materials in parts by weight: 2-10 parts of natural rubber, 0-5 parts of cis-1,4-polybutadiene rubber, 1-5 parts of butadiene styrene rubber, 0-0.5 part of S, 0.01-0.15 part of M, 0.05-0.2 part of DM, 0.1-0.8 part of zinc oxide, 0.1-0.4 part of stearic acid, 1-3 parts of titanium white, 20-30 parts of calcium carbonate and 0.5-2 parts of product oil. The invention also relates to a preparation method of the white food rubber slab. The preparation method comprises the following steps: (1) mixing and banburying; (2) primary rubber mixing and thick slab pressing; (3) standing and oxidation; (4) secondary fine mixing and fine slab pressing; (5) tertiary refining and thin slab pressing; and (6) vulcanizing. The preparation method is low in preparation cost, lowers the enterprise input, and increases the economic benefits. The prepared rubber slab can be used for food packaging and the like, has no toxicity or harm, and ensures the use safety.

Description

technical field [0001] The invention relates to a preparation method of a food rubber sheet, in particular to a preparation method of a white food rubber sheet. Background technique [0002] Plastic sheets for food need to go through safety monitoring. At present, most of the white plastic sheets for food will detect toxic substances or metal elements exceeding the standard, and the plastic sheets are prone to bacteria. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a white food rubber sheet and a preparation method, the rubber sheet prepared by the method is non-toxic and harmless to human body. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] The present invention is a kind of white food rubber sheet, and the rubber sheet comprises the following raw materials by weight: 2-10 parts of natural rubber, 0-5 parts of butadiene...

AI Technical Summary

Problems solved by technology

[0002] Plastic sheets for food need to go through safety monitoring. At present, most of the white plastic sheets for food will detect toxic substances or metal elements exceeding the standard, and the plastic sheets are easy to produce bacteria.